252840687433 has 2 divisors, whose sum is σ = 252840687434. Its totient is φ = 252840687432.

The previous prime is 252840687427. The next prime is 252840687461. The reversal of 252840687433 is 334786048252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 210950059849 + 41890627584 = 459293^2 + 204672^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252840687433 is a prime.

It is not a weakly prime, because it can be changed into another prime (252840687493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126420343716 + 126420343717.

It is an arithmetic number, because the mean of its divisors is an integer number (126420343717).

Almost surely, 2^252840687433 is an apocalyptic number.

It is an amenable number.

252840687433 is a deficient number, since it is larger than the sum of its proper divisors (1).

252840687433 is an equidigital number, since it uses as much as digits as its factorization.

252840687433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7741440, while the sum is 52.

The spelling of 252840687433 in words is "two hundred fifty-two billion, eight hundred forty million, six hundred eighty-seven thousand, four hundred thirty-three".